NGC2403 in Camelopardalis



Scope: C8  f/6.2, Location: Blair Valley, Anza Borrego Desert,   3 November 2007  Camera: Artemis285

Exposure: 8 x 7 minutes Luminance exposures with IR block (1x1 bin), 6 x 2 minutes RGB exposures (2x2 bin).

Processing: Images were captured Artemis Capture (as FITs). Aligned/stacked and dark subtracted in Astroart with Sigma Combine. Luminance and Color channels were scaled and rough color balanced in Astroart.  Channels were co-registered in Astroart. The 7 minute IR block exposures were used as the main luminance construction with level adjustments and curves to bring out dim stars. LRGB combine was done in Photoshop. G2V and Amospheric Extinction factors applied to color the balance. Selective sharpening (with mask) was used to enhance galaxy features. A light noise reduction was applied with PixInsight LE SGBNR.  Final touches were done in Photoshop.  Final Image size is approximately 1392x1040.

North is up in this image.  NGC2403 is part of the M81 galaxy group. Its distance is estimated at 12 million light years distant from earth. This image replaces an earlier image that can be seen in the Archives here.  Horizontal FOV is 24'

Image center is approximately - Equatorial 2000: RA: 07h 36m 51s Dec: +6536'06"


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